Q70
A peak in the X-ray diffraction pattern is observed at 2θ = 78°, corresponding to [311] planes of an fcc metal, when the incident beam has a wavelength of 0.154 nm. The lattice parameter of the metal is approximately
A.
0.6 nm
B.
0.4 nm
AnswerC.
0.3 nm
D.
0.2 nm
Answer: Option B
Solution
Answer: Option B
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